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Exam 220-301:
A+ Core
Hardware Study Test Questions |
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| 16. |
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When a piece of paper comes out of a laser
printer almost completely black, the primary corona has failed to
properly charge the _____________ ?
A. Heated Roller
B. Toner
C. Fuser
D. EP Drum
Answer: D - The Primary Corona wire is used to place a negative
charge on the EP Drum. This will remove toner from those areas
that will not produce an image, so if it fails no toner is remove
from the EP Drum, resulting in a black sheet of paper. |
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| 17. |
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What PC resource does a hardware device use to
let the Central Processing Unit know it needs servicing?
A. IRQ
B. DMA
C. I/O Address
D. Base memory
E. Operating system
Answer: A - By today's standards (and with IDE hard drives using
multiple IRQs) there are too few IRQs to avoid conflicts in some
high-end graphics workstations, especially with multiple SCSI
devices. IRQ stands for Interrupt Request. |
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| 18. |
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Which IRQ is usually assigned for the primary IDE
hard disk controller?
A. 5
B. 7
C. 9
D. 14
E. 15
Answer: D - A computer with an 80286 or higher processor typically
uses IRQ14 for the hard-disk controller. |
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| 19. |
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You print a document to the printer, but when the
document actually prints, it appears as garbage characters. What
do you suspect is the cause of the problem?
A. A wrong print driver.
B. A corrupted print queue.
C. Insufficient disk queue space.
D. PCONSOLE is not installed.
Answer: A - If a printer prints, but prints garbage, you're most
likely using the wrong print driver. Installing the appropriate
driver will fix the problem. A print queue is a holding spot for
print jobs. If the print queue is corrupt, nothing is likely to
print. If there were insufficient disk space for the queue, the
job would never complete from the client. PCONSOLE is an
administrative tool for managing printers. It would not cause
garbled output whether installed or not. |
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| 20. |
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Asynchronous transmission involves the following:
A. Sending information using a start/stop protocol
B. Sending information using external clocking
C. Sending data using mechanical feeder protocol
D. Receiving information from the sender in time clocked order
Answer: A |
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| 21. |
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In the Binary numbering system, what represents a
shorted jumper?
A. 1
B. 0
C. a
D. b
Answer: A - "1" represents a shorted jumper, while a "0"
represents an opened jumper. |
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| 22. |
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You attempt to connect to a computer on the
network but cannot. Other computers cannot connect either. Your
network consists entirely of 10BaseT. What are the most likely
causes? [Choose the two best answers]
A. The computer is off.
B. ESD.
C. The network cable is not connected to the computer.
D. Too many users are logged into the network.
Answer(s): A, C - Generally, if you cannot connect to another
computer on the network, the computer is either down or not
connected to the network. There are other possible reasons for
this scenario, but of the four offered, these are the most likely.
ESD has the potential to damage electronic components. However,
effects of ESD are often gradual rather than catastrophic. The
effect of excessive network load is a reduction in performance,
not the inability to connect to the network. |
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| 23. |
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Which of these local bus standards is capable of
the Pentium's 64-bit data-bus?
A. MCA
B. PCI
C. EISA
D. VESA
Answer: B - Intel's Peripheral Component Interconnect (PCI) is a
local bus standard. It is capable of taking advantage of the
Pentium's 64-bit data-bus. |
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| 24. |
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What is a key troubleshooting process you must
use as a service technician?
A. Interviewing the user.
B. Ensuring power is applied to the computer.
C. Execute a plan.
D. Ensure you have a known good operating system.
Answer: A - The service technician's key component in the
troubleshooting process is questioning the user regarding the
problems the user is experiencing. |
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| 25. |
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A hardware memory test can be carried out
automatically during boot time if:
A. You enable it in the BIOS
B. You enable it in the OS
C. You enable it in the MBR
D. You enable it in the chassis switch
Answer: A - By default there is a memory test every time the PC
boots. The test can be skipped, although not recommended.
References: |
BIOS Info
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| 26. |
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Which of the following describe the refresh rate
for a monitor? (choose all that apply)
A. The refresh rate is the amount of times a display's image is
repainted or refreshed per second
B. The refresh rate is the amount of times a display's image is
repainted or refreshed per minute
C. The refresh rate is expressed in hertz
D. The refresh rate is expressed in Megahertz
Answer(s): A,C - The refresh rate is the amount of times a
display's image is repainted or refreshed per second. The refresh
rate is expressed in hertz so a refresh rate of 75 means the image
is refreshed 75 times in a second. The refresh rate for each
display depends on the video card used. You can change the refresh
rate in the display properties. However, if you change the refresh
rate to a setting that the display or video card cannot support,
the display goes blank or the image becomes distorted. It is
recommended to consult the display and video card manuals before
changing the settings to determine the supported refresh rates.
References: |
Definition of Refresh Rate
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| 27. |
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Your MAC address on your network card is used for
what?
A. It is used to randomly generate your IP address
B. It is used to uniquely identify your computer
C. It isn't used for anything
D. It is a randomly generated number to verify the integrity of
your system
Answer: B |
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| 28. |
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You want to set up a sound card. Which of the
following COM ports will you use?
A. COM 1
B. COM 2
C. COM 3
D. COM 4
E. None of the choices.
Answer: E - A sound card does not use any COM port at all. |
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| 29. |
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How can you identify Pin 1 on a hard drive cable,
the controller, and on the drive itself?
A. Near the processor
B. The edge pin nearest the cable twist
C. A number 1 on the board etching
D. A square dot on the board etching
E. A colored stripe
Answer(s): C, D & E |
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| 30. |
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Which if the following standards use coaxial
cable as a medium? [Choose all that apply]
A. 10BaseT
B. 10BaseF
C. 10Base2
D. 10Base5
Answer(s): C,D - 10BaseT standard for Ethernet local area
networks [LANS], is ordinary telephone twisted pair wire. It
supports a transmission speed of 10mb/s over Ethernet. The "10" in
the media type designation refers to the transmission speed of 10
Mbps. The "T" represents twisted-pair. The "Base" refers to
baseband signalling. The "F" represents fiber optic cable. The
"2", "5", and "36" refer to the coaxial cable segment length [the
185 meter length has been rounded up to "2" for 200]. 10 megabit
Ethernet can also be implemented with the following media types:
NOTES
10BaseF [optical fiber cable)
10Base2 [Thin coaxial cable with a maximum segment length of 185
meters]
10Base5 [Thick coaxial cable with a maximum segment length of 500
meters]
10Base36 [broadband coaxial cable carrying multiple baseband
channels for a maximum length of 3,600 meters] |
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| 31. |
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A customer calls saying that the new modem they
just installed themselves is not connecting to their Internet
Service Provider. They hear the dial-tone and the other modem
answering, but the connection is dropped within a few seconds.
What might be a logical reason for this?
A. The modems are incompatible
B. The modem is configured on the wrong COM port
C. The customer has call waiting and another call is disrupting
the connection
D. The customer check the "only connect at this speed" option and
the ISP's modems are not as fast as the customer's.
Answer: D - Modems on both ends negotiate a connection speed
(handshaking) which can vary due to various reasons. If your modem
is set to connect at one speed only, a handshake failure may
occur. Call-waiting service offered by the phone company can cause
dropped lines. If you have call-waiting service, you need to
disable it when you dial into the Internet. Second, noise on your
phone line can cause dropped lines. Check for noise by connecting
a telephone receiver to the phone line normally connected to your
modem. Phone lines drops are sometimes seen in the first few
seconds after the modem handshake is completed due to a bad
"handshake" . Dropped lines could also be caused by a mismatch
between users' modems and hardware at the other end of the phone
line.
References: |
What causes Modem
Disconnections? | |
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End |
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